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# C++复数运算示例 C++ complex numbers

This is an implementation of C++ complex numbers. <无>
```#pragma once
#include<iostream>
#include<stdlib.h>
#include<complex>

using namespace std;

template <typename T>
class ComplexAlgs
{
public:
ComplexAlgs(complex<T> complexNum1, complex<T> complexNum2)
{
c1 = complexNum1;
c2 = complexNum2;
}//end constructor

complex<T> getSum()
{
return c1 + c2;
}//end funcion.

complex<T> getSubstraction()
{
return c1 - c2;
}//end funcion.

complex<T> getMuliplication()
{
return c1 * c2;
}//end funcion.

complex<T> getDivision()
{
return c1 / c2;
}//end funcion.

~ComplexAlgs()
{
cout << "The class is destroyed!" << endl;
system("pause");
}//end constructor

private:
//Use for represent 2 complex numbers:
complex<T> c1;
complex<T> c2;
}; //end class```
```#include<stdio.h>
#include<stdlib.h>
#include<iostream>
#include<complex>
#include "ComplexAlgs.h"

using namespace std;

int main()
{
//Define 2 parts of 2 complex numbers correspondingly.
double real1, img1, real2, img2;
cout << "Input real part of num1: ";
cin >> real1;
cout << "Input imagninary part of num1: ";
cin >> img1;
cout << "Input real part of num2: ";
cin >> real2;
cout << "Input imaginary part of num2: ";
cin >> img2;

complex<double> c1{ real1, img1 };
complex<double> c2{ real2, img2 };

ComplexAlgs<double> calculateComplex(c1, c2);
cout << "c1 + c2: " << calculateComplex.getSum() << endl;
cout << "c1 - c2: " << calculateComplex.getSubstraction() << endl;
cout << "c1 * c2: " << calculateComplex.getMuliplication() << endl;
cout << "c1 / c2: " << calculateComplex.getDivision() << endl;

//calculateComplex.~ComplexAlgs();
//cout << "c1 + c2: " << calculateComplex.getSum() << endl;
system("pause");
return 0;
}```

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